ArticleAJR. American journal of roentgenology2016
Appearance and Frequency of Gas Interface Artifacts Involving Small Bowel on Rapid-Voltage-Switching Dual-Energy CT Iodine-Density Images.
Article in AJR. American journal of roentgenology, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers.
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Who cites it
7 citing papers in PubMed.
- Virtual monochromatic versus conventional polychromatic CT images in patients with acute bowel ischaemia.European radiology · 2026Article
- Oral CT Contrast Agents: What's New and Why, From theAJR. American journal of roentgenology · 2024Review
- Quantitative assessment of liver steatosis using ultrasound: dual-energy CT.Journal of medical ultrasonics (2001) · 2021Review
- Dual-energy CT in diffuse liver disease: is there a role?Abdominal radiology (New York) · 2020Review
- Rapid switching kVp dual energy CT: Value of reconstructed dual energy CT images and organ dose assessment in multiphasic liver CT exams.European journal of radiology · 2018Article
- Dual-Energy CT Images: Pearls and Pitfalls.Radiographics : a review publication of the Radiological Society of North America, IncArticle
- Quantification of Iodine Concentration Using Single-Source Dual-Energy Computed Tomography in a Calf Liver.Journal of computer assisted tomographyArticle
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Authors and funding
6 authors.
Funding
Abstract
objectiveThe purpose of this study is to describe the appearance and frequency of gas interface artifacts in the jejunum that may mimic severe bowel disease on iodine-density images generated from rapid-voltage-switching dual-energy CT (DECT) scans. MATERIALS AND
methodsTwo readers retrospectively reviewed 108 consecutive abdominal rapid-voltage-switching DECT scans to record the presence of image artifacts in jejunal segments with different degrees of gaseous luminal filling, classified as full, partial, or absent. Readers viewed iodine-density images and corresponding 140-kVp and 65-keV virtual monochromatic images and classified the jejunal artifacts on iodine-density images as pseudostratified appearance of the bowel wall, pseudopneumatosis, pseudohyperenhancement, or pseudohypoenhancement. We correlated the presence of the artifacts with clinical features suggesting bowel disease.
resultsImage artifacts were found in 91 of 108 scans (84.3%), appeared in 148 of 265 jejunal segments (55.8%), and included each type except for pseudohypoenhancement. Artifacts occurred exclusively when gas was present in the bowel lumen and were seen in 59 of 59 (100%) fully gas-distended segments, 89 of 98 (90.8%) partially gas-distended segments, and none of 108 gas-absent segments (p < 0.0001). In fully and partially gas-distended jejunal segments (n = 157), 148 (94.3%) segments had two or more artifacts. None of the patients was found to have clinical bowel-related injury on follow-up of medical records.
conclusionPseudostratified appearance, pseudopneumatosis, and pseudohyperenhancement, but not pseudohypoenhancement, artifacts are common in gas-filled jejunal segments on iodine-density images generated from rapid-voltage-switching DECT scans and are not seen in the corresponding 140-kVp or 65-keV images. Knowledge of the appearance of such iodine-density image artifacts will avoid potential examination interpretation pitfalls.
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